Spraying machine



H. M. BRUNDRETT SPRAYING mcgmn Ja'n. 1,1935.

Filed June 12, 1933 I INVENT UR W lli 11111,

v A'I TURNEY Patented Janf l,

This applicationl is made unde r the "act of March-3,1883, as amended byfithe act ,ofApril 30, 1928, and the invention herein. described, if

, capable of exerting a high pressure to 600 e pounds per square inch) upon the liquid so that patented, may 7 be manufactured and used by or for the Government for governmental purposes without the payment to meof any royalty there;

on; I

I hereby dedicate the invention herein ,ue-

scribed to thefree used the public-inthe terri tory of the United States of America to take effect upon the granting of a patent gto me. l This invention elat'es to improvements in spraying machines fromwhich light oils or aque-f 'ous solutions are sprayed-for-the purpose of controlling insects; and the objects of my improvements are, first, to provide a small hand pump itwill be properly nebulized and distributed;

second, to provide a nozzle which, under the high pressure, reduces the flow of liquid to a rateadequate for'the proper spraying of livestock, and one which will produce in the spray a greater spread and throw andbreak-up thanis produced by other similar machines. H

An important object of the invention is its portability. LBeing light of weight and easy to I operate makes it a desirable type to use among livestock. This sprayer was designed particularly to be used in dairy barns for protecting cattle from the attacks of flies and other insects.

Another object of my invention is pair when necessary.

At present there are no satisfactory machines on the market with which dairy cattle can be sprayed successfully; Their inefiiciency lies in the fact that they either spray too large a volume of liquid, which is costly and also burns the cattle, or else they spray a fine mist, which is diluted with such a quantity of air that it is not effective. The air blast also, has a tendency to frighten the flies away before enough of the spray material has been applied to them.

Another disadvantage of present machines is the form of spray distribution whichjdoes not i have the correct break-up, "throw, spread, and

regularity.

These andother objects are'attained by the construction shown in the accompanying draw: ing, in which the samereference characters in: dicate the same parts in all of the views.

Fig. 1 is an elevation view of the machine showing the exteriorparts.

Fig. 2 is a vertical section showing the internal to provide accessibility to all parts for adjustment and redetain I I .3, isssja construction a nd arrangement the various parts. l

i Fig. 3 is an elevation of the internal parts; of

the machine.

Fig. 4is a vertical"section of thest'uffing box on the upper'end of the pump cylihden Fig. 5 is a perspective View ofthenozzle cross-member .13, tank coverl2, tank 1, base2,

and foot-rest 3, securely together;

Theytank is jreiilled by removing screw cap and pouring the spray material throughstrainer 23 which is composed of200 mesh bronze gauze. Upon moving pump plunger 8 in a vertically remam;mnai r sapieivmga 2J1 ftoft he j free use of the public,

1 ApplicationJune 12,.1933,-fierial No." 675,443 e IClaim. Cissy-9'71 (Granted I under the act of: "March amendedApril 39, 192852200. G.,"7,57)

ciprocating motion, by..m eans of handle 7, which i is secured to pump plunger 8 with nut 6, the spray materialis drawn into the pump. cylinder 26 through intake pipe 33 and downward closing ball check'28 and T 2'7. The spray material is i then forced out through T27 and downwardclosing ball check 30 into 1 surge chamber 31 and into spray line 11, flexible bronze hose 14,.through cut-off l5, spray-rod 16 and out of nozzle 17.

Upon operating the pump the spray material flows into the surgechamber 31 against the air confined therein. The air being compressible exerts a counter force against the liquid causing the liquid to flow out of spray line without surging. The spray material is kept from flowing out of upper end of pump cylinder 26 by means of stuffing box24 which is screwed onto cylinder 26 and through which pump plunger 8 reciprocates. Inside stuffing box 2% is asbestos packing 25 which presses against pump plunger 8, when stufiing box 24 is screwed down upon pump cylinder 26, thus preventing leakage around pump plunger 8. l

Relief valve 32 is placed the spray line to relieve the machine of excessive pressure when cut-off 1 5 is closed and the pump operated. This being a conventional type of relief valve it is set to relieve at a desired pressure by turning a nut against a coil spring which presses the valve head into the seat. In this machine the relief valve is set to open at 350 pounds per square inch,

hydraulic pressure.

The metal foot 29 is placed on intake pipe 33 '10 basal disc'19 and spray disc 21.

flows through basal disc 19into eddy-chamber formed by placing leather washer 20 between Washers are held tightly together on nozzlebody 17 by nozzle cap 22 which is screwed onto nozzle body.-- Two cylindrical ori-fices 34,'35 -are drilled through each, the nozzle body 17 and'basal disc 19 at an angle of 45 degreesto their faces, The cylindrical orifice 36 through spray disc 21 is drilled at an angle of 90 degrees to its face. "The spray material passing through these angular orifices at high speed is set 'toirotating rapidly 2 within the eddy chambers, and passes through the iorificeof spra di c f om whi h ibis-e ected 1n the form of a fine mist. Discs having difierent si es o ez fiee 'are used. epmduee s ra s difierent rates of flow.

1 .It i hnd rsteqd ih thy des r n n deta he n parti u ar e m, t u ure, or a e rangement, it' is': not intended to limit the invention to such specif c, structure'except as hereine ai ergiclaim d I t I ,1 I am awarethat prior to my invention portable spraying machines have been made with recipro e ng p p, d s n e eddyhembe e z the ef r o;n e m u a ombina i n breadly, ut havingthus de cr ed mye nven i nrwhat I claim as new and desire to secure by Letters Patent is: a

In a spraying device, a spray tank, a base supporting said tank, a foot-rest attached to and protruding a substantial distance from beneath the opposite sides of the base, a tank cover for} the top of the tank, a;cr ss'member extending;

across and slightly beyond the sides of the cover,

, a handle attached to the cover, tie rods passing The discs and" through the protruding portions of the foot rest 7and,remoyably afiixed to said cross-member and handle,v a removablepump cylinder vertically positien ed within the 'spray tank and having an opening at its lower end, means to maintain the jipumpcylinder in theidesired position adjacent to said cover, a pump plunger positioned Within the pump cylinder and passing through said cover and having a handle, a surge chamber vertically positiened W thin the ay ta k, p p means necting the surge chamber at its lower end with the pump cylinder near the lower end of the pump cylinder, a check valve located within the pump cylinder between the opening in the pump cylinder and said pipe,g.a second check valve lo;- cated within the pipe, a spray line vertically p0sitioned within'the spray tankvand connected with said pipe between the surge chamber and the last mentioned check valve, said check valves being desi ned a d located to permit th flow of sp aylm erial t ward the-sur e ch m and pra l n only and a r l ef va ve a ached to the spray line. th p a tanhsfldsrra l ne extendin threushthetank e verv BB NDR TT. 

